Improved mode op connecting artificial teeth with dental plates



('Bffiw.

HENRY CRANE, OF NEW YORK, N.-Y.

l Letters Patent No. 86,972, dated Februar/ry 16, 1869.

IMPROVED IVI-ODE OF CONNECTING- ARTIFICIALTEETHWITH DENTAL PLATES.

The Schedule referred to in these Letters Patent and making part of the lame.

To all whom it may concern.-

Be it known that I, HENRY CRANE, of the city,

panying drawings, forming part of this specification, in'

which- Figure 1 is an inner side view of a set of teeth, illustratiug my improvement.

'Figure 2 is a face view of the same.

Figure 3 is a sectional view of the same, taken through the line x x, iig. 2.

Similar letters of reference indicate corresponding parts.

My invention has for its object to furnish a more simple, convenient, effective, and reliable mode of connecting artificial teeth to base or palate-plates; and

It consists in doing this by means of headed hardrubber dowel-pins, or standards, vas hereinafter more fully described.

The various operations of preparing the plates and setting the teeth are conducted in the ordinary manner.

A is the metallic base, or palate-plate, in that part of which, that is covered upon one or yboth sides with the hard-rubber base, B, is formed one or more rows orseries of holes, which holes are countersunk upon one sigle of said plate A, as shown in iig. 2.

By this construction, when the rubber is vulcanized in the flask, the said rubber may be forced through the said holes, as shown inv figs. 1 and 2, forming hard-rubber standards, with heads, or enlarged parts, pressed into the said counter-sinks, which prevent themfrom being drawn out of the said plates A, thus securely connecting' the teeth O and hard-rubber base, B, to the said metallic plates A, said rubber standards forming an integral part of said rubber base, B.

. This improvement is 4applicable to any metallic base or palate-plate, but is especially applicable to aluminum plates, with which metal it has been found impossible to use solder.

I am aware that rubber bases-have heretofore been connected to metallic dental plates by means of tongues,

or projections, formed on such plates, and embedded in the rubber; but as these forlnno part of myinvention, I do not claim; but, having thus described my invention i I ,claim as new, and desire to secure by Letters Patentv As a new article of manufacture, the palate-plate A and rubber base B, connected by the dowel-pins a projecting throughv the perforations b in said plate, and formed with heads fitting in counter-sinks in the same, as herein described.

The above specification of my invention signed by me, this 17th day of November, 1868.

H. CRANE.

Witnesses:

FRANK BLOGKLEY, JAMES T. GRAHAM. 

